search for: seabirds

...nlinear optimization problem we are working on. The problem we are working on is to try to pick a set of islands on which to eradicate rats for seabird conservation. We have about 50 islands, each of which has some subset of 17 seabird species. Rats are present on all islands, and will cause the seabirds to go extinct unless they are removed. Removing rats on islands costs different amounts depending on which island is chosen. The decision problem is to pick the set of islands which will save the "most" seabird species within a given budget. Here we use a nonlinear function to calculat...

...seem to get it to work without getting some strange error messages. I am trying to find out what is affecting the number of seabird calls on an array of recorders placed at 4 sites on 6 islands. I have nightly variables (weather and moonlight), site variables (proximity to a source population of seabirds and proximity to a refugia from predators). and island variables (island size and number of years since predator eradication). Here's a sample of my data: Date ISLAND SITE Calls Years Erad Island size Refugia Dist Source Moon Wind Speed 5/28/2009 Amatignak East 9 19 3543 3 58.6 0.2 2.54 5/...

Dear all, I am analyzing counts of seabirds made from line transects at sea. I have been fitting Poisson and negative binomial distributions to the data using the goodfit function from the vcd library. I would also like to evaluate how well a quasi-poisson distribution fits the data. However, none of the potentially suitable functions I hav...

The NOAA National Centers for Coastal Ocean Science is hiring a Computational Ecologist, a statistical/computational ecologist with experience fitting advanced spatial models to marine wildlife survey data (e.g., seabirds and marine mammal transects, fisheries trawl surveys) in R and other statistical languages. This is a full-time, long-term stable contract position. We are looking for an expert R programmer with experience in spatial modeling, especially of marine wildlife survey transect data (e.g. seabirds,...

Hello, I discovered SAGA, an interesting free GIS, a few days ago and now, I would like to use it from within R 2.6.2 using the RSAGA package. I read the documentation for this package and thought that I understood it correctly for trying to call some of the SAGA modules. For getting the information on the usage of and arguments required by the SAGA command line "Import Binary Raw

...mplex spatial and spatiotemporal ecological modeling challenges, including modeling of species? distributions, marine wildlife survey data, and/or physical, oceanographic, and geological aspects of marine habitat. Examples of potential projects include spatial and spatiotemporal modeling of corals, seabirds, marine mammals, fish, seafloor habitats, estuarine and coastal habitats, and marine ecosystem structure (e.g., connectivity, biodiversity) in a variety of US jurisdictions. Core responsibilities: - Provide statistical, computational, and analytical support for projects that use predictive models...